Religion permeates our world and remains highly influential across all domains of human society, including politics, culture, and economics. Religion also plays a critical role in everyday life as it provides meaning, motivation, and social support for billions of people. Despite trends of secularisation in some areas, on a global level religious identification is actually growing and a majority of people around the world continue to be affiliated with religious organisations and communities. It is not a stretch to claim that no matter the region, the issue, or the historical period, knowledge of religion is essential for understanding the world.